Given the nature of the carbon cycle, it is possible that a single atom of carbon that is in your skin could have once been part of your own great grandmother, or even a dinosaur.

Question

Quizplus · Accepted Answer

The carbon cycle involves the movement of carbon atoms through various living and non-living components of the Earth's biosphere. As a result, a carbon atom that is currently in your skin may have once been part of a past living organism, including your great grandmother or a dinosaur.

Given the Nature of the Carbon Cycle, It Is Possible